Question

RST is dilated about the origin, 0, to create R’S’T. Point R is located at (3,9) and point R’ is located at (1.2, 3.6). Which scale factor was used to perform the dilation?

Answer 1

0.4

Explanation:

Since the dilatation is about the origin, then dividing the coordinates of the image R' by the coordinates of the original point R gives the scale factor

scale factor =
`(1.2)/(3)` =
`(3.6)/(9)` = 0.4